Charged liquid dispenser with pocketed gas container



1.. M. PUSTER 3,347,417 ENSER WITH POCKETED GAS CONTAINER Oct. 17, 1967CHARGED LIQUID DISP Filed Aug. 23, 1965 5 $heets*Sheet 1 LOUIS M.

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g 4 mm x. o9 vw v 02 mm HIS ATTORNEYS 1.. M. PUSTER 3,34%417 SER WITHPOCKETED GAS CONTAINER Oct. 17, 1967 CHARGED LIQUID DISPEN aSheets-Sheet 2 Filed Aug. 23, 1965 Om O2 INVENTORQ LOUIS M. PUSTER HISATTORNEYS Oct. 17, 1967 1... M. FUSTER 3,347,417 CHARGED LIQUIDDISPENSER WITH POGKETED Filed Aug. 23, 1965 GAS CONTAINER 3 Sheets$heet5 INVENTOR. LOUIS M. I PUSTER HIS ATTORNEYS United States Patent Ofifice3,347,411 Patented Oct. 17, 1967 ABSTRACT OF THE DISCLOSURE Thisapplication discloses a charged liquid containing dispenser shell with aliquid filling end wall having a countersunk pocket and a liquid fillingand emptying opening spaced from the pocket opening. The pocket containsa high pressure charging gas container with a gas charging check valveat the center of the pocket opening. The gas container has an automaticgas expansion valve at its inner end that discharges reduced pressuregas into the gas charged liquid in the liquid dispenser shell. Thecharging gas container has a massive cylindrical end wall with anextruded relatively thin gas containing cylindrical wall with its endinwardy cured and holding the gas containing check valve. The massiveend wall contains the expansion valve and an expanded gas chamber.

This invention relates to a charged liquid dispenser with pocketed gascontainer.

One of the features of this invention includes a charged liquiddispenser which has a countersunk pocket within which is located acharging gas container, with the gas container being normally retainedin such pocket while the dispenser is repeatedly filled and refilledwith a charged liquid, such as a gas charged beverage.

Another feature of this invention includes a slidable telescopingconnection between the pocket of the dispenser and the gas container, sothat the gas container may be readily removed and replaced, if desired.

Another feature includes a gas container which may be removed from thepocket while charged liquid remains in the dispenser.

Another feature of this invention includes a dispenser with a dispensingfaucet countersunk in one dispenser end wall and with a centrallylocated pocket provided with a gas container at the other dispenser endwall.

Another feature of this invention includes a dispenser with a centrallylocated pocket provided with a gas container at a dispenser wall with aperpendicularly disposed centrally located charging valve in saidcontainer, and with a liquid filling and emptying opening in suchdispenser wall.

Another feature includes a surrounding drainage forming means along theperiphery of an end wall of the dispenser which is connected with aliquid filling and emptying opening in such end Wall.

Another feature of this invention includes a dispenser pocket havingperipheral wall lug constructions for retaining the gas container insuch pocket.

Another feature includes lug construction of the preceding feature inwhich pressure relief passageway means pass said lug constructions.

Other features are apparent from this description, the appended claimedsubject matter, and/or the accompanying drawings, in which:

FIGURE 1 is a diagrammatic cross section of a charged liquid or beveragecontaining dispenser casing combined with a high pressure charging gasor CO container.

FIGURE 2 is an enlarged portion of FIGURE 1 including the CO container.

FIGURE 3 is an end View FIGURE 1.

FIGURE 4 is a cross section along the line 4-4 01 FIGURE 1.

FIGURE 5 is a cross section tube.

FIGURE 6 is an enlarged view of the end of FIGURE 5 taken from line 3-301 of the liquid CO arrestin FIGURE 7 is a cross section along theFIGURE 6.

FIGURE 8 is a cross section along the line 8-8 of FIGURE 6.

FIGURE 9 is a cross section of the pressure regulating spring cage.

FIGURE 10 is an end view from line 10-10 of FIG- URE 9.

FIGURE 10A is an end view from the line 10A-10A of FIGURE 9.

FIGURE 11 is a cross section of the pressure adjusting screw andadjustable spring and receiving nut.

FIGURE 12 is a cross section of the bayonet portion of the expanded gasdischarging tube construction, taken along the line 1212 of FIGURE 2.

FIGURE 13 is a cross section of the extrusion used in forming the COcontainer.

FIGURE 14 is a cross section of the nipple which connects the gascontainer with the pocket bayonet member.

Certain words may be used in this specification and in the claimedsubject matter which indicate direction, relative position, and thelike. Such words are used for the sake of clearness and brevity.However, it is to be understood that such words are used only inconnection With the illustrations in the drawings, and that in actualuse, the parts described by these words may have entirely differentdirection, relative position and the like. Examples of these words arevertical, horizontal, upper, lower, bottom, etc.

According to this invention a relatively low pressure gas charged liquidcontaining dispenser shell 20 may have a gas charging and liquid fillingend wall 22, a liquid dispensing end wall 24, and a cylindraceous orcylindncal side wall 26.

The side wall 26 may be welded at 27 to the flange 25 of the end wall22.

The filling end Wall 22 may have a periphery and may be generally flatand may be substantially circular, as shown in FIGURE 3, and may have anintegral substantially cylindrical, countersunk pocket wall 28. Suchpocket wall 28 may have a substantially circular pocket opening 30 and asubstantially circular pocket bottom 32.

The filling end wall 22 may have a substantially flat, substantiallyannular portion 34 which surrounds the pocket opening 30.

Such annular portion 34 may have .a liquid filling and line 77 ofemptying opening 36, which may be laterally spaced from the pocketopening 30. The opening 36 may be closed by a bayonet type plug 35,having a flange 39 engaging a suitable seal ring 37. The flange may havethe tool receiving slot construction 41 for turning the plug 35 tosecure to or remove it from the opening 36.

The liquid dispensing end wall 24 may have an inwardly recessed orconcave portion 345, with a rim 40, which joins the end wall 24 to thedispenser side wall 26. A liquid dispensing faucet 42 may be secured inthe recessed portion 24 and may be connected with a liquid conveyingtube 44 with its liquid intake end 46 extending to a normally lowposition 50 in the charged liquid which is contained in the shell 20.The shell 20 may be normally in horizontal position, as shown inFIGURE 1. The maximum highest normal liquid level of the liquid in theshell 20 is diagrammatically indicated at 52.

A relatively high pressure charging gas container 54 may have arelatively high pressure gas within the chamber 56. Such gas may be COfor example, and a portion of such gas may be in liquid form with amaximum normal highest level 58.

The charging gas container 54 may be assembled in substantially finishedform outside the pocket 28 and may then be inserted and locked in thepocket 28 so that the high pressure gas is automatically reduced to adesired reduced gas pressure. Such gas is then automatically fed intothe charged liquid or beverage through the flexible one way check valve59. The various details elsewhere described permit the gas container 54to be easily and effectively inserted and locked in the pocket 28.

The gas container 54 may have a central gas charging means 60 locatedadjacent the center of the pocket opening 30, and at the center of theend wall 22.

The gas container 54 ordinarily may remain in the shell 20 with onlyinfrequent removals or replacements, even while the shell is beingfilled, emptied, and refilled. The dispenser shell 20 may be filled orrefilled with charged liquid or beverage through the opening 36. Ifnecessary, any remnant of the beverage in the shell 20 may be previouslyemptied through the opening 36. Thereafter, the shell opening 36 may besealed by the plug 35 and the gas container 28 may be charged orrecharged with liquid CO or the like through the central gas chargingmeans 60.

The shell 20 may be internally washed and sterilized with the use offluids inserted and removed through the opening 36 even while the gascontainer 54 remains in the casing or shell 20.

Also, if desired, the gas container 54 may be removed from the pocket 28while the shell 20 is filled or partially filled with beverage, becausethe one way check valve 59 is connected to the pocket 28 and remains inplace after the container 54 is removed from the pocket 28.

The shell 20 and gas container 54 may be filled by automatic machinerybecause of the central position of the filling means 60 and because theopening 36 may be centrally aligned to a central line of travel of theautomatic machinery.

These and other advantageous features become apparent from the furtherdetails herein disclosed.

The gas container 54 may have an automatic gas pressure reducing means62. Such means 62 may be connected to a reduced pressure gas conductingmeans or conduit 64, which may be so connected that it dischargesreduced pressure gas into the gas charged liquid in the shell 20. Areduced pressure outlet means 66 may be provided, including check valve59, which discharges the reduced pressure gas into the gas chargedliquid in the shell 20.

The dispenser shell 20 has a cylindrical side wall 26 joined to adrainage reverse bead 68 which is joined to the periphery of the annularportion 34 of the end wall 22. The head 68 is enlarged at 70, FIGURE 3,to surround the liquid filling and emptying opening 36. The edge of theopening 36 is offset from the plane of the annular portion 34 to aid indraining the remnant liquid into the opening 36 when the shell 20 istilted for drainage purposes.

The charging gas container 54 may include a massive, susbtantially solidcylindrical body 72 with a relatively thin, hollow cylindrical wall 74homogeneous with said body and extending toward the pocket opening 30,and which forms the relatively high pressure gas chamber 56.

The word homogeneous is used herein as defined in Websters InternationalDictionary, G. & C. Merriam Company, Springfield, Mass, as follows: ofuniform structure or composition throughout, such as produced by thecold extrusion method to be described.

Originally, the massive body 72, and the thin wall 74 may have beenformed from a solid slug, by a cold extrusion method, to form theextruded construction 75 as 4 shown in FIGURE 13, to form theincompletely formed massive body 72A, and the originally uncurled thincylindrical wall 74A, as shown in FIGURE 13. This cold extrusion may beformed of any suitable aluminum alloy, such as 606l-T6.

After the cold extrusion process has been performed, to form theincomplete construction 75 of FIGURE 13, the free end 77 of thecylindrical wall 74A of FIGURE 13 may be inwardly curled as shown at 76in FIGURES 1 and 2, which will be adjacent the pocket opening 30. Thecurled end 76 may hold, and may be sealed to a charging valve holdingplug 7 8 which may be welded at to the inwardly curled end 76 of thecylindrical wall 74.

The plug 78 may be inserted into the wall 74A before the curlingoperation takes place. Originally, the plug 78 may have been providedwith a properly formed and internally threaded passageway 82, which isadapted later to receive the tire inflation type of valve 84.

The plug 78 may be held in place to be welded at 80 by any type of tool,which may be passed through the threaded opening which has beenpreviously machined in the massive body 72. Alternatively, the plug 78may be held by a tool which may pass through the opening 82 of the plug78, and out the free curled end '76 of the wall 7 4.

The high pressure gas container 54 may be completely assembled andformed outside of the pocket 28 and may thereafter be inserted thereinas will become apparent.

The plug 78 may be part of the charging means to introduce high pressuregas into the chamber 56. The tire type valve 84 may have a poppet 86 anda stem 88 which operate in the same manner as tire inflation valve,except that the valve 84 operates under the pressure of the compressedCO which is introduced through the valve '84 by a charging needle. Thecharging needle may be introduced through a rubber plug 90, which has aself sealed needle receiving aperture 92. The plug 90 is pressed intothe opening 82 to hold the disc 94 which has two spaced gas passageways96. The openings 96 are laterally spaced from the stem 88, so that thecharging needle cannot engage the stem 88. The needle will be blocked bythe blocking central portion 98 of the disc.

The CO charging needle can be inserted through the opening 92 in theplug 80 and this causes the tire inflation valve to open and allow theliquid CO to be received in the chamber 56. Preferably only enoughliquid CO is fed to provide a maximum liquid level at 58, slightly belowthe gas conducting tube 100 more fully to be described.

The cylindrical body 72 is a massive expansion valve and expansion valvechamber containing body with said body having an expanded gas sideextending in one direction and with a high pressure liquefying gas sidedirected in the opposite direction has a threaded opening 85, which hasbeen formed by machining or the like, and into which the passagewaymeans or tube 100 has been threaded as shown. The passageway means 100may contain an expansion valve or check valve 102, which may be of atire inflation type, with a poppet 104 and a stem 106. The tube 100 hasan intake end 10 8, which has a liquid CO filter means 110, whichprevents any large slugs of liquid CO from reaching the expansion valve102. The intake 108 is on the high pressure gas chamber side and thetube 100 has its discharge opening 112 on the discharge side of the body72, where the expanded gas chamber 114 has been formed.

An automatic pressure responsive means 116 may be placed between themassive body 72 and the pocket bottom 32. The automatic pressureresponsive means 116 may operate the check valve 10-2 to supply reducedpress6ure gas to the reduced pressure gas conducting means The pressureresponsive means 116 may include a diaphragm 11 8, with a peripheryengaging the discharge side of the massive body 72. A spring holdingcage 120 holds j the periphery of the diaphragm 118 against the body 72by means of the cylindrical wall 122, and the screws 124 which may beinserted in the screw holes 126.

The cage 1 20 may hold an adjustable spring and holding means 128. Aspring 130 may have one end held by the holding means 128 and may haveanother end engaging the diaphragm 118.

The cage 120 may have a discharge nipple 132, which is press fitted andgas tight fitted into its cylindrical wall or rim 122. The nipple 132will fit into the opening 134 of the bayonet conducting means 136, whichis connected to the pocket bottom 32. The bayonet means 136 has adischarge extension 137 which carries the flexible check valve 59.

The massive body 72 has a rupture means or rupture disc 138, which isconnected to the high pressure chamber by means of the passageway 140.When the rupture disc is ruptured by an excessive high pressure in thechamber 56, the discharged CO may flow through the passageway means tobe described between the side wall 142 of the pocket 28 and along theoutside of the cylindrical massive body 72 and cylindrical wall 74 in amanner to be more fully described.

The cage 120, which is shown in FIGURES 1, 2, 9 and 10, may have a rim122 with spacing lugs 144, which loosely engage the inner surface of theside wall 142 of the pocket 32.

The cylindrical wall or rim 122 has an opening 146 in which thedischarge nipple 132 is pressed fitted. The opening 146 is connected toanother smaller opening 148 which is aligned with the longitudinalpassageway 150 by means of a recess 152 in which an O-ring 154 isprovided to form a sealed joint between the opening 148 and thepassageway 150.

The opening 148 may be sufficiently small in cross section to-limit thespeed of flow of gas from the space 56 to the shell 20 below a safelimit.

The nipple 132 has a relatively wide passageway 156 and a relativelynarrow passageway 158. The passageway 156 has its outer edge connectedto the opening 148, so' that reduced pressure gas can flow from theexpanded gas chamber 114, through the passageways 64, 150, recess 152,opening 148, passageway 156 and passageway 158 and into the passageways160 and 161 of the bayonet conducting means 136. The passageway 161 isconnected to the flexible tube check valve 59, which is resilientlyfitted over the discharge extension 137. The check valve 59 may be aresilient rubber like tube which has slits 162 which normally are closedwhen the pressure in the interior 164 of the tube is the same or lessthan the pressure in the shell 20. However, when the pressure at thetube interior 164 exceeds the pressure outside the tube 59, then the gascan flow outwardly through the slits 162. A cylindrical metal member 165prevents the tube 59 from collapsing inwardly by outer pressure. Thecylindrical member 165 is just slightly less in diameter than the normalunexpanded diameter of the tube 59.

The bayonet member 136 is an irregular, tube like member in which theouter extension 137 has radial ridges 166, FIGURE 12, which extend tothe outer surface of the bottom wall 32 of the pocket 28. The bayonetmember 136 can be pushed outwardly from the pocket 28 (leftwardly inFIGURE 2) before the gas container 56 is inserted in the pocket. Theridges 166 can pass through slots 168 in the bottom wall 32, and thenthe bayonet 136 can be rotated slightly, so that the ridges 166 movefrom the dotted line positions 166A and lock the member 137 to thebottom wall 32. A seal ring 170 is first placed around the opening 172in the bottom wall 32. The large head 174 of the bayonet member 136engages the seal ring 170 and creates a sealing joint to prevent fluidflow from passing along the seal 170*. The large head 174 may have a keyslot 176, for turning the head 174 to move the same from the dotted linepositions 166A, FIGURE 12, to the full line positions 166 to produce thebayonet locking action of the member 136. The discharge nipple 132 hasan O-ring 178 which forms a fluid seal between the nipple 132 and thehead 174. However, it also permits the gas pressure container 56 to bepushed in or pushed out of the pocket 28, with a sealed connectionbetween the nipple 132 and the head 174 of the bayonet member 136.

Because of the telescoping and sliding connection between the nipple 132and the head 174, the gas container 56 can be easily pushed in or pulledout of the pocket 28 with the attached nipple 132 sliding in thestationary head 174. The gas container 56 may be pushed into the pocket28 past inward lugs or depressions 180 and 182.

The lugs 144 of the container 56 can pass the inward depressions 180 and182, since there are undepressed cylindrical portions 184, FIGURE 4, ofthe side wall 142 of the pocket 28 through which the lugs 144 can pass.Therefore, the container 56 can be pushed in past the depressions 180and 182, and the nipple 132 can be slidingly telescoped into thepreviously located large head 174 of the bayonet member 136. Thereafter,a locking ring 186 may be pushed in the pocket 28 past the lugs ordepressions 180 and 182 and may be then turned in bayonet fashion, tolock the ring 186 with the depressions 180 to hold the container 56 inplace. The container 56 or container wall 72 has a shoulder 188 againstwhich the ring 186 engages, and holds the container 56 firmly in placeand locked in the pocket 28.

The ring 186 has slots 190 by which the ring 186 may be turned by awrench or the like, from an unlocked posi-' tion to a locked position.

Thereafter, the cover 192 for the opening 30 may be snapped over therecesses or depressions 182, to close the opening 30 against theentrance of large objects. The cover 192 has a bead construction 194,which holds the cover 192 in place, after the bead 194 has been snappedpast the depressions 18 2, This construction provides channels 196 forthe flow of gas outwardly to the atmosphere past the cover 192, if thereshould be a super pressure release action produced.

If the pressure relief disc 138 should burst due to excessive pressurein the chamber 56, the excess CO can flow through the passageway 198,FIGURE 1, past the undented portions 200, FIGURE 4, in. the ring 186,and into the space 202 between the pocket wall 142 and the cylindricalwall 74 of the container 56 and from thence through the channel 196 ofthe cover 192 to the atmosphere.

The cover 192 may have a central opening 204, through which a chargingneedle may be inserted in the charging slot 92 of the plug 90, to chargethe container 56.

The spring cage 120, FIGURES 9, l0 and 10A may have the ring or rim 122,the longitudinal spaced walls 206, with air flow spaces or gas flowspaces 208 between such walls 206. The walls 206 support an end wall210, which has an opening 212.

An adjustable abutment screw 214, FIGURES 2 and 11 has a circular head216 integral with the screw 214 and a circular smaller head 218 alsointegral with the screw 214. A wrench opening 220 may be provided forturning the screw by means of a knurled wrench or rod which is insertedin the opening 220.

A circular internally threaded nut 222 has a hexagonal flange 224, whichfits into the inner sides 206A of the walls 206, FIGURE 10A. This flange224 is held rotationally fixed by the walls 206, but can movelongitudinally along the screw 214, when the screw 214 is turned by thewrench in the Opening 220. A compression spring 130 has one end engagingthe flange 224, and the other end engaging the diaphragm 118, by meansof the grooved plate 228.

The diaphragm "118 has a conical opening 230. A poppet valve 232 has aconical stem 234, which also is conical shape, with a less acute anglethan the opening 230.

As the pressure increases in the expansion chamber 114, the diaphragm118 moves leftwardly and the poppet valve 232 follows it because of thepressure in the chamber 114. However, when the poppet valve stem 234strikes the screw 214, the gaseous CO escapes between the stem 234 andthe opening 230 and can pass through the escape passageway 268 into thespace outside of the cage 120. From thence it can flow between the lugs144 and from thence through the passageway 198, etc., which have beenpreviously described, and out through the passageways 196 of cover 192to the outside atmosphere.

The gas container 28 of the dispenser of this invention may be chargedwith liquid CO by a vertically directed charging needle which can beinserted into the self sealed central slot 92. The shell 20 may also bein vertical position, supported on the rim 40.

Likewise liquid beverage, such as beer, may be introduced verticallyinto the liquid filling opening 36.

The dispenser may be filled by automatic machinery. The shells 20 may beserially fed along an operating line during which the shells 20 aresupported with the central slot 92 substantially on the operating lineThe liquid beverage filling opening 36 may also be guided at or near theoperating line.

The shell 20 may be vertically filled to the desired level through theuncovered opening 36. Thereafter, such opening 36 may be plugged bycover 35.

The gas container 56 may then be charged with liquid CO for example, bya vertically applied charging needle.

The shell 20 may be safely held in vertical position during the travelof the shell along the operating line.

The tube 100 may have a filter plug 238 inserted at its intake end 108.

The filter plug 238 is machined from a square bar so that it has a mainbody 240 with rounded corners 242.. The rounded corners 242 are fittedinto the thin tube section 244 of the tube 100. This forms relativelylarge passageways 243 along the flat sides 245 of the main body 240. Theplug 248 also has a narrow neck 246 which extends to a disc 248. Thedisc 248 extends into the thicker wall 250 of the tube 100. There is aclearance between the thick tube 250 and the disc 248 in the order of.003 inch radial or .006 diameter difference between the internaldiameter of the thick tube 250 and the outer surface of the disc 248.This clearance provides a filtering action to prevent slugs of liquid COfrom reaching the poppet 104 and harming It.

The main body 240 may be tapered at 252 and 254 to cause a smoother flowof gas.

A pop-off relief valve, not shown, may be provided for the chargedliquid space in shell 20. Such pop-off valve may be placed in the plug35, or in a rigid sleeve construction which may be inserted in andsecured to the annular portion 34. Such sleeve may have a flange securedto the portion 34 and the sleeve may extend inwardly into the liquidspace of shell 20 which surrounds the pocket 28. The pop-off valve maybe a well known screw-in type valve which may pop-off at a pressurebetween -40 p.s.i.g.

The faucet is indicated at 42, the liquid conveying tube is indicated at44 with its intake indicated at 46 near the low portion 50 of thecharged liquid in the shell 50.

Thus it is to be seen that a new, useful and unobvious dispenser andmethod have been provided by this invention.

While the form of the invention now preferred has been disclosed asrequired by statute, other forms may be used, all coming within thescope of the claimed subject matter which follows.

What is claimed is:

1. In combination:

a relatively low pressure gas charged liquid containing dispenser shellhaving a gas charging and liquid filling end wall and a liquiddispensing end wall;

said filling end wall being substantially circular and having anintegral substantially cylindrical countersunk pocket with asubstantially circular pocket opening and a substantially circularpocket bottom;

said filling end wall having a substantially flat, substantially annularportion surrounding said pocket opening, said annular portion having aliquid filling and emptying opening laterally spaced from said pocketopening;

said liquid dispensing end wall having an inwardly recessed portion witha liquid dispensing faucet in said recessed portion with a liquidconveying tube extending to a normally low position in said chargedliquid;

a relatively high pressure charging gas container in said pocket;

said gas container having a gas charging means located adjacent thecenter of said pocket opening;

said gas container having an automatic gas pressure reducing means witha reduced pressure gas conducting means adjacent said pocket bottom;

and reduced pressure outlet means in said pocket bottom connected tosaid outwardly conducting means and discharging reduced pressure gasinto said gas charged liquid.

2. A combination according to claim 1 in which said dispenser shell hasa cylindrical side wall and a reverse bead joining the periphery of saidannular portion and said side wall, with said bead being enlarged tosurround said liquid filling and emptying opening.

3. A combination according to claim 1 in which said charging gascontainer includes:

a massive substantially solid cylindrical body with a relatively thinhollow cylindrical wall extending toward said pocket opening, andforming a relatively high pressure gas chamber;

said cylindrical wall having an inwardly curled end adjacent said pocketopening;

said cylindrical body having gas passageway means containing a checkvalve with an intake having a connection with said high pressure gaschamber on an intake side of said body and having a discharge on adischarge side of said body;

automatic pressure responsive means connected to said massive bodyadjacent said pocket bottom operating said check valve to supply reducedpressure gas to said reduced pressure gas conducting means.

4. A combination according to claim 3 in which said automatic pressureresponsive means includes:

a diaphragm with a periphery engaging the periphery of the dischargeside of said massive body;

a spring holding cage holding said periphery of said diaphragm andhaving adjustable spring end holding means;

a spring having one end held by said holding means and having anotherend actuating said diaphragm.

5. A combination according to claim 4 in which said cage has a dischargenipple connected to said reduced pressure conducting means, and in whichsaid nipple is slidably connected to a bayonet conducting meansconnected to said pocket bottom.

6. A combination according to claim 5 in which said massive body hasrupture means connected to said high pressure gas chamber, and in whichatmosphere passageway means is connected to said rupture means along theoutside of said thin cylindrical wall and connected to the outsideatmosphere.

7. In combination:

a massive expansion valve and expansion valve chamber containing bodywith said body having an expanded gas side directed in one direction andwith a high pressure liquefied gas side directed in the oppositedirection and with a cylindrical homogeneous high pressure gas chamberforming wall homogeneous with said body and with a free end extendingfrom said high pressure liquefied gas side;

said body having a tube receiving opening connecting said expanded gasside and said high pressure liquefied gas side;

an end sealing plug in said cylindrical wall, said plug having a checkvalve receiving passageway, said free end being inwardly curled to forma reduced size free end, said plug being bonded to said reduced sizedfree end;

an expansion valve supporting tube in said tube receiving opening, saidtube having an intake end extending toward said high pressure liquefiedgas side, and having a discharge end extending toward said expanded gasside;

an expansion valve in said supporting tube with an operating sternextending toward said expanded gas side and with a valve opening andclosing member operated by said stem and extending toward said highpressure liquefied gas side;

an expanded gas pressure responsive diaphragm in said massive bodyadjacent to and actuating said stem;

and a charging gas check valve in said check valve receiving passageway.

8. A combination according to claim 7 in which a liquefied gasrestrictor is provided within said intake end of said supporting tube.

9. A combination according to claim 8 in which said supporting tube issecured so that said intake end is located above the normal highestliquefied gas level in said high pressure chamber.

10. A combination according to claim 7 in which said supporting body hasbeen formed from a metal slug which has been subjected to an extrusionstep to form said main body and said cylindrical high pressure gaschamber forming wall.

11. A combination according to claim 8 in which said liquefied gasrestrictor includes a straight sided equilateral restrictor pluginserted in a cylindrical end portion of said supporting tube.

12. A combination according to claim 11 in which said restrictor plughas tapered ends.

13. A combination according to claim 11 in which said restrictor plughas the edges of its sides rounded to fit in said cylindrical endportion.

14. A combination according to claim 11 in which said restrictor plughas tapered ends and has the edges of its sides rounded to fit in saidcylindrical end portion.

15. A combination according to claim 14 in which said restrictor plughas a cylindrical neck and a cylindrical head formed at the end of saidrestrictor plug and has said head inserted in a reduced diameter portionof said tube.

16. In combination:

a massive expansion valve and expansion valve chamber containing bodywith said body having an expanded gas side directed in one direction andwith a high pressure liquefied gas side directed in the oppositedirection and with a cylindrical high pressure gas chamber forming wallhomogeneous with said body and with a free end extending from said highpressure liquefied gas side;

said body having a tube receiving opening connecting said expanded gasside and said high pressure liquefied gas side;

said free end being inwardly curled to form a reduced size free end, andsaid reduced size free end having a gas charging valve secured thereto;

an expansion valve supporting tube in said tube receiving opening, saidtube having an intake end extending toward said high pressure liquefiedgas side, and having a discharge end extending toward said expanded gasside;

an expansion valve in said supporting tube with an operating stemextending toward said expanded gas side and with a valve opening andclosing member operated by said stem and extending toward said highpressure liquefied gas side;

and an expanded gas pressure responsive diaphragm in said massive bodyadjacent to and actuating said stem.

17. In combination:

a liquid container dispenser shell having a generall flat end wall witha liquid filling opening adjacen the periphery of said end Wall;

a pocket forming wall integral with said flat end wal having a pocketopening in said end wall centrally 01 said filling opening, said pocketforming wall having a bottom with charging gas passageway meansextending from said pocket bottom into the liquid space of said shell;

and a removable charging gas container in said pocket forming wall, saidcontainer having a gas charging opening adjacent said pocket opening andhaving a gas discharge means connectable and disconnectable to saidcharging gas passageway means.

18. In combination:

a liquid container dispenser shell having an end wall with a liquidfilling opening adjacent the periphery of said end Wall;

a pocket forming wall integral with said end Wall having a pocketopening in said end wall centrally of said filling opening, said pocketforming wall having a bottom with charging gas pasageway means with ahead on said pocket wall and a discharge tube extending into the shellliquid space outside said pocket;

and a charging gas container in said pocket, said container having a gascharging opening adjacent said pocket opening and having a gas dischargemeans slidingly and sealingly connectable and disconnectable with saidhead.

19. A combination according to claim 18 in which said gas container has-a massive substantially solid cylindrical body with a relatively hollowcylindrical wall homogeneous with said body and extending toward saidpocket opening and forming a relatively high pressure gas chamber, saidcylindrical wall having an inwardly curled end adjacent said pocketopening and holding a plug containing a gas charging check valveaccessible to a gas charging needle adjacent said pocket opening.

20. In combination:

a liquid container dispenser shell having an end wall with a liquidfilling opening adjacent the periphery of said end Wall;

a pocket having a pocket opening in said end wall centrally of saidfilling opening, said pocket having a pocket wall and a charging gaspasageway means with a head on said pocket wall and a discharge tubeextending into the shell liquid space outside said pocket; and

a charging gas container in said pocket, said container having a gascharging opening adjacent said pocket said head in which a locking ringhas bayonet engagement with said pocket wall and an abutting engagementwith said gas container to hold said container in said pocket.

References Cited UNITED STATES PATENTS 548,301 10/ 1895 Dunn 220-401,359,795 11/1920 Delahey et al. 2223 1,515,218 11/1924 Lambert 220-662,812,109 5/1957 Wentz 222 52 3,024,800 3/1962 Lewis 222399 3,065,88311/1962 Nelson 222-399 3,155,292 11/1964 Webster 222-397 3,211,85010/1965 Brown 222-399 3,232,485 2/1966 Wilson 22252 3,233,780 2/1966Cheeley 2252 3,239,101 3/1966 Wilson 22252 3,245,583 4/1966 Miller et al222-52 WALTER SOBIN, Primary Examiner.

1. IN COMBINATION: A RELATIVELY LOW PRESSURE GAS CHARGED LIQUID CONTAINING DISPENSER SHELL HAVING A GAS CHARGING AND LIQUID FILLING END WALL AND A LIQUID DISPENSING END WALL; SAID FILLING END WALL BEING SUBSTANTIALLY CIRCULAR AND HAVING AN INTEGRAL SUBSTANTIALLY CYLINDRICAL COUNTERSUNK POCKET WITH A SUBSTANTIALLY CIRCULAR POCKET OPENING AND A SUBSTANTIALLY CIRCULAR POCKET BOTTOM; SAID FILLING END WALL HAVING A SUBSTANTIALLY FLAT, SUBSTANTIALLY ANNULAR PORTION SURROUNDING SAID POCKET OPENING, SAID ANNULAR PORTION HAVING A LIQUID FILLING AND EMPTYING OPENING LATERALLY SPACED FROM SAID POCKET OPENING; SAID LIQUID DISPENSING END WALL HAVING AN INWARDLY RECESSED PORTION WITH A LIQUID DISPENSING FAUCET IN SAID RECESSED PORTION WITH A LIQUID CONVEYING TUBE EXTENDING TO A NORMALLY LOW POSITION IN SAID CHARGED LIQUID; A RELATIVELY HIGH PRESSURE CHARGING GAS CONTAINER IN SAID POCKET; 